[PATCH v2] examples/vm_power: add support for list_foreach_safe

[Shibin Koikkara Reeny]

Asan tool reported LIST_FOREACH should be replaced with
LIST_FOREACH_SAFE. Added support for LIST_FOREACH_SAFE
macro in rte_os.h file as Linux header file sys/queue.h
don't support LIST_FOREACH_SAFE macro.
RTE_LIST_FOREACH_SAFE is alias for LIST_FOREACH_SAFE.

Fixes: e8ae9b662506 ("examples/vm_power: channel manager and monitor in host")
Cc: alan.ca...@intel.com
Cc: sta...@dpdk.org

Signed-off-by: Shibin Koikkara Reeny <shibin.koikkara.re...@intel.com>
---
 examples/vm_power_manager/channel_manager.c |  9 +++++----
 lib/eal/linux/include/rte_os.h              | 11 +++++++++++
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/examples/vm_power_manager/channel_manager.c 
b/examples/vm_power_manager/channel_manager.c
index 838465ab4b..d297b28114 100644
--- a/examples/vm_power_manager/channel_manager.c
+++ b/examples/vm_power_manager/channel_manager.c
@@ -66,8 +66,8 @@ LIST_HEAD(, virtual_machine_info) vm_list_head;
 static struct virtual_machine_info *
 find_domain_by_name(const char *name)
 {
-       struct virtual_machine_info *info;
-       LIST_FOREACH(info, &vm_list_head, vms_info) {
+       struct virtual_machine_info *info, *t_info;
+       RTE_LIST_FOREACH_SAFE(info, &vm_list_head, vms_info, t_info) {
                if (!strncmp(info->name, name, CHANNEL_MGR_MAX_NAME_LEN-1))
                        return info;
        }
@@ -1005,9 +1005,9 @@ channel_manager_exit(void)
 {
        unsigned i;
        char mask[RTE_MAX_LCORE];
-       struct virtual_machine_info *vm_info;
+       struct virtual_machine_info *vm_info, *t_info;
 
-       LIST_FOREACH(vm_info, &vm_list_head, vms_info) {
+       RTE_LIST_FOREACH_SAFE(vm_info, &vm_list_head, vms_info, t_info) {
 
                rte_spinlock_lock(&(vm_info->config_spinlock));
 
@@ -1024,6 +1024,7 @@ channel_manager_exit(void)
 
                LIST_REMOVE(vm_info, vms_info);
                rte_free(vm_info);
+
        }
 
        if (global_hypervisor_available) {
diff --git a/lib/eal/linux/include/rte_os.h b/lib/eal/linux/include/rte_os.h
index c72bf5b7e6..3acff49360 100644
--- a/lib/eal/linux/include/rte_os.h
+++ b/lib/eal/linux/include/rte_os.h
@@ -25,6 +25,8 @@ extern "C" {
 #define RTE_TAILQ_NEXT(elem, field) TAILQ_NEXT(elem, field)
 #define RTE_STAILQ_HEAD(name, type) STAILQ_HEAD(name, type)
 #define RTE_STAILQ_ENTRY(type) STAILQ_ENTRY(type)
+#define RTE_LIST_FIRST(head) LIST_FIRST(head)
+#define RTE_LIST_NEXT(elem, field) LIST_NEXT(elem, field)
 
 #ifdef CPU_SETSIZE /* may require _GNU_SOURCE */
 typedef cpu_set_t rte_cpuset_t;
@@ -46,6 +48,15 @@ typedef cpu_set_t rte_cpuset_t;
 } while (0)
 #endif
 
+#ifndef LIST_FOREACH_SAFE
+#define LIST_FOREACH_SAFE(var, head, field, tvar) \
+       for ((var) = RTE_LIST_FIRST(head); \
+               (var) && ((tvar) = RTE_LIST_NEXT((var), field), 1); \
+               (var) = (tvar))
+#endif
+#define RTE_LIST_FOREACH_SAFE(var, head, field, tvar) \
+       LIST_FOREACH_SAFE(var, head, field, tvar)
+
 #ifdef __cplusplus
 }
 #endif
-- 
2.25.1